Shoe repairing machine



Jan. 26, 319.32. A. KLOS 1,842,551

SHOE REPAIRING MACHINE Filed March 16, 1931 2 Sheets-Sheet l Jan. 26, 1932. I KLQS 1,842,551

SHOE REPAIRING MACHINE Filed March 16, 1931 v- 2 Sheets-Shet 2 llll ltti

Patented Jan. 26, 1932 Warren STATES PATENT orrlcs MM K1208, @3 BALTWORE, MARYLAND EHQE .WAIEING Application filed March it, 1981. serial No. 522,924.

This invention relates to grinding and polishing machines such as are used in shoe repair shops.

in the machines now generally in use it is quite common to mount a series of grinding and polishing wheels side by side at intervals sufliciently wide to permit adjacent wheels to be used by two or more workmen simultaneously. Consequently a set of such wheels sufficient to perform coarse and fine grinding, brushing and polishing takes up considerable room longitudinally.

@ne important object of the present invention is to provide an improved machine of this class wherein the wheels used in grinding and polishing are so arranged as to talze up comparatively little space longitudinally.

A second difficulty experienced with the use oi. wheels mounted side by side as above described resides in the fact that an operative, after performing one operation on a shoe, has to wall; to a second position to perform a second operation and so on, so that much loss oi time and energy is consumed in moving from place to place.

A second important object of the invention is to provide an improved construction of grinding" and polishing machine wherein the several wheels may, as desired by the operative, be brought into position before him while he remains at the same station.

A third important object of the invention, is to provide improved means whereby a part of the same mechanism which drives the wheels is used to shift the wheels selectively into and out of working position.

in devices of the usual. kind alcove mentioned it is common to drive the entire set of wheels simultaneously in many cases. This entails a considerable waste of power since one or more of the wheels are frequently out of use though running.

A fourth important object of the invention is to provide an improved machine of this class wherein only the wheel or wheels which it is desired to use will be running, the re maining wheels standing still.

its ordinarily constructed there is but one wheel oi each kind in a long machine. Consequently, if two operatives wish to perform terred to so that the operatives at the several the same operation at the same time this cannot be done and one has to stand idle until the other is through.

A fifth important object of the invention is to provide a machine l or this purpose of such compact nature that two or more may be placed in a space the longitudinal dimension of which is no greater than that occupied by a single machine of the old type above refill machines may simultaneously use like Wheels to perform the same operation.

With the above and other objects in view, the invention consists in general of certain novel details of constructlon and combinations of parts hereinafter fully describcd,il lustrated in the accompanying drawings and specifically claimed.

lln the accompanying drawings-like charesters of reference indlcate like parts in the w several views, and

Figure l is an end elevation proved machine.

Figure 2' is a side elevation thereof with certain parts shown in section.

in the embodiment here shown there is provided a pair of A-frames 10 which rest on the floor or ground and have alined bearings 11 adjacent their upper ends. A. hollow or tubular shaft 12 is journalled in these bearlugs and fixed on this shaft between and adjacent the'respective bearings 11 are sleeves or hubs 13 -ironrwhich radiate hollow arms 14k.

Une of the frames 10 carries a shelf 15 whereon is mounted a motor 16 provided with a pulley 1-7. Each A t-frame is provided with v a bearing 18 at its lower art and journalled in the' bearings 18 is a s aft 19 wheneon is fixed a pulley 20 belted to the pulley 17 by a belt'21. At each end the shaft 19 projects well beyond the res ective bearing 18 and on one projecting on is mounted an outboard pulley 22. An arm 23 projects from this end of the machine and extends forwardly from the frame just below its bearing 11. Extending through a suitable bearing in the forward end of this arm is a short shaft 24 on the outboard end of which is mounted a pulley 25 connected to the pulley 22 by a of the im- 7 lull belt 26. On the inboard end of the shaft 24 is fixed a gear 27 1 Extension arms 28 are mounted in the arms 14 and are held in adjusted positions by the set screws 29. The outer end of each of these arms is forked and supports a self-alining bearing 30, the positions of the arms and bearings being such as to provide pairs of .alined bearings each rotatably supporting a brush shaft 31. Each shaft 31 has fixed thereon one or more wheels, the abrasive wheels being indicated at 32 and the polishing wheels at 33. Each shaft 31 also has fixed thereon a gear 34 and these gears are arranged to selectively mesh with the gear 27 upon rotation of the shaft 12 to bring them into meshing position.

On the shaft 12 is fixed a gear 35 wherewith meshes an idler gear 36 mounted on a stub shaft 37 supported in the forwardly extending arm 38 of a lever pivotally mounted on said shaft 12. This lever arm is capable of tilting to move the idler gear into and out of mesh with the gear 27. and to thereby operatively connect and disconnect the gears 27 and 35, the two positions of the idler gear being shown in dotted and full lines respec tively. This lever has a rearwardly extending arm 39 connected by a pin and slot connection 40 with the rearwardly extending arm of an operating lever 41 pivoted intermediate its ends at 42 to the rear part of the respective A-frame. The forward end of this lever is provided with the usual hand grip and between this end and the pivot 42 there is pivoted to the lever a latch pin 43 extending through the guide 44 on the A-frame and normally engaging in one of the notches 45 of a ratchet disk or wheel 46. A spring 47 normally holds the latch pin raised. The notches 45 are so positioned that the respective gears 34 mesh with the gear 27 as the latch pin engages a respective notch 45.

In the operation of this part of the de-' vice it will be seen that the forwardly positioned gear 34 is in mesh with gear 27 so that the forwardly positioned shaft 31 and its wheels is driven. The operator can now use the wheel or wheels on this sh aft. Should he wish to use one of the other wheels he momentarily depresses the handle of lever 41 thereby freeing the latch pin and bringing the gear 36 into mesh with gear 37 so that the gear 35 and shaft 12 are rotated. This will move the forwardly positioned gear 34 out of mesh with the gear 27 He now releases the operating lever and when this is done the shaft will, by the engagement of the pawl pin on the periphery of the ratchet disk hold the gears 36 and 27 in mesh until the next notch 45 alines with the pawl pin which then rises into that notch and stops movement of the shaft 12 at the same time moving the gear 36 out of mesh with the gear 27. As this turning operation takes place the next gear 34 I ing gear moves into mesh with the gear 27 to drive the wheels on its shaft. Thus the wheels on the several shafts 31 may be successively positioned for use.

In order to remove the dust of the grinding operation'hoods 48 are provided for the several grinding wheels and open into the hollow shaft 12 one end of which is closed. The

other end of this shaft fits revolubly into the intake of a suction fan 49 driven by a belt 50 from a pulley 51 on the shaft 19. A conduit 52 leads from the outlet of this fan to a suitable dust disposal point here indicated by the dust catcher or receptacle 53. While here shown as in the form of a casing supported by the A-frames it is obvious that this dust catcher may be located where desired or the conduit may even lead to a point out of doors and the dust simply delivered in the open air.

It will be noted that the structure of the machine forms a revoluble spider the arms of which carry revoluble shafts supporting the grinding and polishing wheels.

There has thus been provided a simple and eflicient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the device without departing from the material principles thereof; It is not, therefore,

wished to confine the invention to the exact form here shown and described, but it is wished to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new is 1. In a grinding and polishing machine, a revoluble spider, shafts supported revolubly in the arms of said spider, operating wheels on said shafts, a gear on each shaft. a driving gear adjacent the path of said first gears, the revolution of the spider bringing the gears on the shafts successively into mesh with the driving gear, and means for intermittently rotating the spider and driven by said driving gear. 4

2. In a grinding and polishing machine, a revoluble spider, shafts supported revolubly in the arms of said -spider,-operating wheels on said shafts, a gear on each shaft, a drivadjacent the path of said first gears, the revolution of the spider bringing the gears on the shafts successively into mesh with the driving gear, a gear carried by said spider, and means for intermittently connecting the driving gear and the gear carried by the spider.

3. In a grinding and polishing machine, a revoluble spider, shafts supported revolubly in the arms of said spider, operating wheels on said shafts, a gear on each shaft, a driving gear adjacent the path of said first gears, the revolution of the spider bringing the gears on the shafts successively into mesh with the driving gear, a gear fixed to the spider, and an idler gear meshing with the last mentioned gear and supported for movement into and out of mesh with the driving gear.

4. In a grinding and polishing machine, a revoluhle spider, shafts supported revoluhly in the arms of said spider, operating wheels on said shafts, a gear on each shaft a driving gear adjacent the path of said first gears, W the revolution of the spider bringing the gears on. the shafts successively into mesh with the driving gear, a gear fixed to the spider, an idler gear meshing with the lastnientioned gear and supported for movement into and out of mesh with the driving gear,v a latching mechanism for holding the spider in position with the gear of a selected shaft in mesh with the driving gear anda lever operatively connected to the idler gear supim port and latching mechanism to effect simultaneous unlatching of the latching mechanism and movement of the idler gear into mesh with the driving gear.

5. in a grinding and polishing machine, a revoluble spider, shafts supported revoluhly in the arms of said spider, operating wheels on said shafts, a gear on each shaft, a driving gear adjacent the path of said first gears, the revolution of the spider bringing the gears on the shafts successively into mesh with the driving gear, said spider including a hollow shaft having one end closed, hoods for certain of the operating wheels carried by the spider and opening into the hollow shaft, and a suction inn communicating with the open end of the hollow shaft,

lin grinding and polishing machine, a revolnhlc spider, shafts supported revoluhl v in the arms of said spider, operating wheels on said shafts, a gear on each shaft, a driving adjacent the path of said first gears, the revolution of the spider hringing the gears on the shafts successively into mesh with the driving gear, means for intermittently rotating the spider and driven by said driving gear, said spider including a hollow sh aft having one end closed, hoods for certain of the operating wheels carried loy the spider and opei iing into the hollow shaft, and a suction fan communicating with the open end of the hollow shaft.

in testimony whereof ll affix my signature.

ADAM MUS. 

